On Thu, Jun 28, 2012 at 8:26 PM, Chetan Jhurani <span dir="ltr"><<a href="mailto:chetan.jhurani@gmail.com" target="_blank">chetan.jhurani@gmail.com</a>></span> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div lang="EN-US" link="blue" vlink="purple"><div class="im"><p class="MsoNormal">> Look. It does not do that. Ever. In any universe. I don't know what you think you are doing,<u></u><u></u></p><p class="MsoNormal">
> but it is definitely not what you wrote. Look at the code. It can't do that.<u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p>
</div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">I don’t think you understand what your code is doing in a new<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">environment of the same universe.</span></p>
</div></blockquote><div><br></div><div>Yes, you are correct. I do not understand this code. I was wrong to tell you to use it. Don't use it.</div><div><br></div><div>    Matt</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div lang="EN-US" link="blue" vlink="purple"><p class="MsoNormal"><span style="font-family:Verdana,sans-serif;font-size:11pt"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">It works fine on Linux with the steps you had given.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">But on the cygwin side, no dependency files like<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">./lib/libpetsc-obj/adaptbasic.d are created. I found this after<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">running the python build on Linux (I didn’t know before this<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">where the dependencies were stored).<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">Here is some debug info in the python code:<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">In the buildLibraries function on the Linux box (when building in the second step)<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">  self.sourceDatabase =  DirectedGraph with 1172 vertices and 21894 edges<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">However, on the cygwin side (again, when building the second time)<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">  self.sourceDatabase =  <builder.NullSourceDatabase object at 0xffd833ac><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">So of course it is totalRebuild = true on cygwin.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">I don’t mind extra debugging on cygwin/Windows before reporting issues<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">since I know the petsc project has many other priorities. But a few useful<u></u><u></u></span></p><p class="MsoNormal">
<span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">debugging pointers will be serve both of us better.<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">Chetan<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p><div style="border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt"><div><div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <a href="mailto:petsc-dev-bounces@mcs.anl.gov" target="_blank">petsc-dev-bounces@mcs.anl.gov</a> [mailto:<a href="mailto:petsc-dev-bounces@mcs.anl.gov" target="_blank">petsc-dev-bounces@mcs.anl.gov</a>] <b>On Behalf Of </b>Matthew Knepley<br>
<b>Sent:</b> Thursday, June 28, 2012 6:00 PM</span></p><div><div class="h5"><br><b>To:</b> For users of the development version of PETSc<br><b>Subject:</b> Re: [petsc-dev] slow "ar Scq" on cygwin<u></u><u></u></div>
</div><p></p></div></div><div><div class="h5"><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">On Thu, Jun 28, 2012 at 4:49 PM, Chetan Jhurani <<a href="mailto:chetan.jhurani@gmail.com" target="_blank">chetan.jhurani@gmail.com</a>> wrote:<u></u><u></u></p>
<div><blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in"><div><p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">> > $ PETSC_DIR=/cygdrive/d/petsc-dev-2012-06-26 PETSC_ARCH=test_8 ./config/builder.py<br>
> > (The same happens (existing .o are deleted) if ./config/builder2.py build is used)</span></b><u></u><u></u></p><p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">> </span></b>This is not what I wrote. You used builder.py, which is python 2.4 compatible, but has to do everything without options,<br>
<b><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">> </span></b>so yes it deletes all the objects and rebuilds everything. That is why I did not suggest you use it.<u></u><u></u></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">> </span></b>I said to use builder2.py, which does proper dependency tracking.<u></u><u></u></p><p class="MsoNormal">
<span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">That is what I used and I mentioned it above. I’ve tried both separately.</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">Both give the same result that libpetsc.lib is not created.  And</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">whether I use builder.py or builder2.py, the existing objects</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">files are deleted in the second build. I did not call for a cleanup.</span><u></u><u></u></p>
</div></blockquote><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">Look. It does not do that. Ever. In any universe. I don't know what you think you are doing,<u></u><u></u></p></div><div>
<p class="MsoNormal">but it is definitely not what you wrote. Look at the code. It can't do that.<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">  matt<u></u><u></u></p>
</div><div><p class="MsoNormal"> <u></u><u></u></p></div><blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in"><div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">To be sure, I tried the whole thing in a new ARCH with a fresh</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">configure step, and this time builder.py was not used at all (by me)</span><u></u><u></u></p><p class="MsoNormal">
<span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">but it led to the same issues with builder2.py.</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">I understand that this is not the most used platform, so let me</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">know if I can be of help.  And I forgot to mention that the</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">python build was 4-5 times faster than “ar” based build and</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">that’s great...</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">Chetan</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span><u></u><u></u></p><div style="border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt"><div><div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <a href="mailto:petsc-dev-bounces@mcs.anl.gov" target="_blank">petsc-dev-bounces@mcs.anl.gov</a> [mailto:<a href="mailto:petsc-dev-bounces@mcs.anl.gov" target="_blank">petsc-dev-bounces@mcs.anl.gov</a>] <b>On Behalf Of </b>Matthew Knepley<br>
<b>Sent:</b> Thursday, June 28, 2012 3:21 PM<br><b>To:</b> For users of the development version of PETSc<br><b>Subject:</b> Re: [petsc-dev] slow "ar Scq" on cygwin</span><u></u><u></u></p></div></div><p class="MsoNormal">
 <u></u><u></u></p><p class="MsoNormal">On Thu, Jun 28, 2012 at 4:10 PM, Chetan Jhurani <<a href="mailto:chetan.jhurani@gmail.com" target="_blank">chetan.jhurani@gmail.com</a>> wrote:<u></u><u></u></p><div><blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt">
<div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">Matt,</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">I was surprised too on both counts. Couldn’t find any libpetsc.lib after the python build</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">and I did not run “clean” in between that could have deleted the .o files.</span><u></u><u></u></p><p class="MsoNormal">
<span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">Here’s one more try below to show it.</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span><u></u><u></u></p><p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">$ ls test_8/lib/</span></b><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">libpetsc-obj</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span><u></u><u></u></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">$ ls test_8/lib/libpetsc-obj/ | wc -l</span></b><u></u><u></u></p><p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">560</span></b><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span><u></u><u></u></p><p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">$ PETSC_DIR=/cygdrive/d/petsc-dev-2012-06-26 PETSC_ARCH=test_8 ./config/builder.py</span></b><u></u><u></u></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">(The same happens (existing .o are deleted) if ./config/builder2.py build is used)</span></b><u></u><u></u></p>
</div></blockquote><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">This is not what I wrote. You used builder.py, which is python 2.4 compatible, but has to do everything without options,<u></u><u></u></p>
</div><div><p class="MsoNormal">so yes it deletes all the objects and rebuilds everything. That is why I did not suggest you use it.<u></u><u></u></p></div><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">
I said to use builder2.py, which does proper dependency tracking.<u></u><u></u></p></div><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">   Matt<u></u><u></u></p></div><div><p class="MsoNormal">
 <u></u><u></u></p></div><blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt"><div><p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span></b><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">Rebuilding Dependencies</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">Building in /cygdrive/d/petsc-dev-2012-06-26/src/sys</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">Building in /cygdrive/d/petsc-dev-2012-06-26/src/sys/bag</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">Building in /cygdrive/d/petsc-dev-2012-06-26/src/sys/comm</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">Building in /cygdrive/d/petsc-dev-2012-06-26/src/sys/dll</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span><u></u><u></u></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">I stopped the build using control-c.  It would have deleted all files first.</span></b><u></u><u></u></p><p class="MsoNormal">
<span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">Traceback (most recent call last):</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">  File "./config/builder.py", line 1534, in <module></span><u></u><u></u></p><p class="MsoNormal">
<span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">    PETScMaker().run()</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">  File "./config/builder.py", line 1526, in run</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">    if self.buildLibraries('libpetsc', self.rootDir):</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">  File "./config/builder.py", line 1331, in buildLibraries</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">    objects += self.buildDir(root, files, objDir)</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">  File "./config/builder.py", line 1251, in buildDir</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">    objects.extend(getattr(self, 'compile'+language)(sourceMap[language], objDir))</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">  File "./config/builder.py", line 1025, in compileC</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">    return self.compile(self.configInfo.languages.clanguage, source, objDir)</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">  File "./config/builder.py", line 1012, in compile</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">    (output, error, status) = self.executeShellCommand(cmd, checkCommand = noCheckCommand, log=self.log)</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">  File "/cygdrive/d/petsc-dev-2012-06-26/config/BuildSystem/script.py", line 254, in executeShellCommand</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">    (output, error, status) = runInShell(command, log, cwd)</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">  File "/cygdrive/d/petsc-dev-2012-06-26/config/BuildSystem/script.py", line 243, in runInShell</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">    thread.join(timeout)</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">  File "/usr/lib/python2.6/threading.py", line 655, in join</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">    self.__block.wait(delay)</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">  File "/usr/lib/python2.6/threading.py", line 258, in wait</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">    _sleep(delay)</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">KeyboardInterrupt</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span><u></u><u></u></p><p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">$ ls test_8/lib/libpetsc-obj/</span></b><u></u><u></u></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">bag.o</span></b><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">All the previous .o were deleted.  Perhaps I’m not doing something right?</span><u></u><u></u></p><p class="MsoNormal">
<span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">Chetan</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span><u></u><u></u></p>
<div style="border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt"><div><div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in"><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <a href="mailto:petsc-dev-bounces@mcs.anl.gov" target="_blank">petsc-dev-bounces@mcs.anl.gov</a> [mailto:<a href="mailto:petsc-dev-bounces@mcs.anl.gov" target="_blank">petsc-dev-bounces@mcs.anl.gov</a>] <b>On Behalf Of </b>Matthew Knepley<br>
<b>Sent:</b> Thursday, June 28, 2012 2:46 PM<br><b>To:</b> For users of the development version of PETSc<br><b>Subject:</b> Re: [petsc-dev] slow "ar Scq" on cygwin</span><u></u><u></u></p></div></div><p class="MsoNormal">
 <u></u><u></u></p><p class="MsoNormal">On Thu, Jun 28, 2012 at 3:31 PM, Chetan Jhurani <<a href="mailto:chetan.jhurani@gmail.com" target="_blank">chetan.jhurani@gmail.com</a>> wrote:<u></u><u></u></p><div><blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt">
<div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">Thanks Matt, Satish.  A few issues though.</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">Like you said, the latest cygwin has python 2.6.8 which</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">does not have argparse.  When I place the following</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">in path <a href="http://argparse.googlecode.com/svn/trunk/argparse.py" target="_blank">http://argparse.googlecode.com/svn/trunk/argparse.py</a></span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">I can run the python build with 2.6.8.</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">However, the “ar” based build had worked fine and the python</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">based build fails for these two files.</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">  src/snes/impls/MULTIB~1/multiblock.c</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">  src/snes/impls/vi/rsaug/virsaug.c</span><u></u><u></u></p></div></blockquote><div><p class="MsoNormal"> <u></u><u></u></p>
</div><div><p class="MsoNormal">Yep, it fails, but the build succeeds, so no problem.<u></u><u></u></p></div><div><p class="MsoNormal"> <u></u><u></u></p></div><blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt">
<div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">It looks like these two files were NOT compiled in the ar based</span><u></u><u></u></p><p class="MsoNormal">
<span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">build. The two make.log files are attached.</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">One more question. I tried to run the python based build</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">the second time (after it was unsuccessful the first time)</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">and then it deleted all the previous .o files it had created in </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">ARCH/lib/libpetsc-obj.  How can that be avoided?</span><u></u><u></u></p>
</div></blockquote><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">It does not do that unless you run 'clean'.<u></u><u></u></p></div><div><p class="MsoNormal"> <u></u><u></u></p></div>
<div><p class="MsoNormal">   Matt<u></u><u></u></p></div><div><p class="MsoNormal"> <u></u><u></u></p></div><blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt">
<div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">Chetan</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span><u></u><u></u></p><div style="border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt"><div><div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <a href="mailto:petsc-dev-bounces@mcs.anl.gov" target="_blank">petsc-dev-bounces@mcs.anl.gov</a> [mailto:<a href="mailto:petsc-dev-bounces@mcs.anl.gov" target="_blank">petsc-dev-bounces@mcs.anl.gov</a>] <b>On Behalf Of </b>Matthew Knepley<br>
<b>Sent:</b> Thursday, June 28, 2012 1:35 PM<br><b>To:</b> For users of the development version of PETSc<br><b>Subject:</b> Re: [petsc-dev] slow "ar Scq" on cygwin</span><u></u><u></u></p></div></div><div><p class="MsoNormal">
 <u></u><u></u></p><p class="MsoNormal">On Thu, Jun 28, 2012 at 2:23 PM, Chetan Jhurani <<a href="mailto:chetan.jhurani@gmail.com" target="_blank">chetan.jhurani@gmail.com</a>> wrote:<u></u><u></u></p></div><div><div>
<blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt"><p class="MsoNormal">Hi devs,<br><br>Is there a way to avoid running the archiver (ar)<br>
every time a petsc directory is compiled?<br><br>The reason I'm asking this is that when libpetsc.lib<br>becomes large enough (say 100MB+, esp. for debug build),<br>"ar Sqc" on cygwin takes very long in each directory.<br>
Depending on OS caching, very long can be 10 seconds per<br>PETSc directory just to run ar.<br><br>It creates a new temp file from scratch, puts stuff from<br>libpetsc.lib and new stuff in it and then renames the<br>temp file.  As you can imagine, the compilation process is<br>
fast in the beginning but crawls by the end.  I've seen<br>the same IO sequence on Linux (with Sqc flags to ar), but<br>since cygwin IO is slower the effect is more clearly visible.<br>Building within a ramdisk leads to 25% faster compilation<br>
but it was more of a curiosity.<u></u><u></u></p></blockquote><div><p class="MsoNormal"> <u></u><u></u></p></div></div><div><p class="MsoNormal">Build with Python. It never uses antique things like ar :)<u></u><u></u></p>
</div><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">  python2.7 ./config/builder2.py build<u></u><u></u></p></div><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">
     Matt<u></u><u></u></p></div><div><p class="MsoNormal"> <u></u><u></u></p></div><blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt">
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="color:#888888"><br>Chetan</span><u></u><u></u></p></blockquote></div><p class="MsoNormal"><span style="color:#888888"><br><br clear="all"></span><u></u><u></u></p>
<div><p class="MsoNormal"><span style="color:#888888"> </span><u></u><u></u></p></div><p class="MsoNormal"><span style="color:#888888">-- <br>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>
-- Norbert Wiener</span><u></u><u></u></p></div></div></blockquote></div><p class="MsoNormal"><span style="color:#888888"><br><br clear="all"></span><u></u><u></u></p><div><p class="MsoNormal"><span style="color:#888888"> </span><u></u><u></u></p>
</div><p class="MsoNormal"><span style="color:#888888">-- <br>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>
-- Norbert Wiener<u></u><u></u></span></p></div></div></blockquote></div><p class="MsoNormal"><span style="color:#888888"><br><br clear="all"><u></u><u></u></span></p><div><p class="MsoNormal"><span style="color:#888888"> <u></u><u></u></span></p>
</div><p class="MsoNormal"><span style="color:#888888">-- <br>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>
-- Norbert Wiener<u></u><u></u></span></p></div></div></blockquote></div><p class="MsoNormal"><br><br clear="all"><u></u><u></u></p><div><p class="MsoNormal"><u></u> <u></u></p></div><p class="MsoNormal">-- <br>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>
-- Norbert Wiener<u></u><u></u></p></div></div></div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>
-- Norbert Wiener<br>